160,258+ Software Engineer Pythonjava Jobs in UK — Top Companies Hiring July 2026

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Kubernetes Infrastructure Engineer for AI Software

EngineersOfAI is seeking a dynamic individual to join our Software Infrastructure team. In this pivotal role, you will develop essential tools and services that empower our software development efforts. Your contributions will enhance the build, test, deployment, and productisation processes for our Machine L ...

Senior C# Software Engineer X 4

Senior C# Software Engineer X 4 Are you a talented C# and Azure developer ready to take ownership of innovative projects across Web, Desktop, and Cloud environments? Our client, a well-established and forward-thinking software development company, is expanding its team and seeking an exceptional ...

Impactful Software Engineer Remote & Flexible Hours

Limelight Health is seeking a Software Engineer to contribute to impactful public service projects. In this role, you will work across various technologies including Java, Python, and React, delivering high-quality solutions in an agile environment. We value a diverse workforce and offer flexible benef ...

Senior C++ Software Engineer Cyber Security

Senior C++ Software Engineer / Developer Cambridge / WFH to £80k Do you have strong backend C++ software development experience? You could be progressing your career at the world's most advanced cybersecurity technology business that uses AI technology to protect clients acros ...

Software and Systems Defect Coordination Engineer

Our OEM Client based in Gaydon, is searching for Software and Systems Defect Coordination Engineer to join their team, Inside IR35. This is a contract position with a proposed end date of 31st March 2027. Umbrella Pay Rate: £33.64 per hour. Duties: This role (Softw ...

C++ Software Engineer Linux Low Latency

C++ Software Engineer / Developer (Linux Low Latency) London to £200k Do you have expertise with backend, low latency C++? You could be progressing your career in a senior, hand-on role at a hugely profitable, long established Hedge Fund. What's in it for you: < ...

Senior Full Stack Software Engineer (eDV)

Locations: Gloucester, London or Manchester We're supporting a leading defence organisation delivering advanced technology solutions into the UK's defence and national security sector. Due to continued growth, they are looking for eDV (Enhanced DV) Cleared Full Stack D ...

Senior Software Engineer, Autonomous Maritime Systems

Dormont Manufacturing Co is seeking a Senior Software Engineer to lead the development of software for autonomous systems. This role involves driving technical solutions, mentoring team members, and owning software services for defense capabilities. The ideal candidate will possess a strong background ...

Hybrid Factory Data & AI Software Engineer

Dormont Manufacturing Co is seeking a Factory Software Engineer with expertise in data integration and software development. This role, based in the United Kingdom, emphasises collaboration across Thales UK to deliver innovative data solutions and enhance customer satisfaction. Candidates should have over 5 y ...

Software Development Engineer, Fire TV Platform

United States Digital Space LLC is seeking a passionate Software Development Engineer to enhance the Fire TV platform with innovative Android applications. You will take ownership of end-to-end development, ensuring solutions are scalable and reliable while collaborating in an Agile/Scrum environment. <p ...

Software Engineer | Top Tier Hedge Fund

Job Overview Full-Time | Office-Based | Exceptional Compensation + Performance Bonus Join one of the world’s leading hedge funds and build technology that sits at the centre of investment decision-making, research, and execution. This is an opportunity for a high-performing Software Enginee ...

Timetabling Software Engineer Flexible Work & Growth

United States Digital Space LLC seeks a Software Engineer for the Timetabling product team in White City, England. You'll design and build secure, scalable solutions to enhance teaching and learning services. Ideal candidates have a strong understanding of software engineering principles, experience in ...

Software Engineer Darwin Server, Core OS

The Darwin Server team in Core OS is looking for enthusiastic engineers interested in developing system software for the company’s operating systems. Darwin is the UNIX‑like foundation at the heart of all the company’s operating systems, stretching from the kernel up through low‑level user components. The ...

Web Software Engineer React, Next.js & TypeScript

Virgin Active is looking for a passionate Web Software Engineer to help change lives through wellness. This role includes building modern web applications using React and Next.js while collaborating with Product Managers and Designers. Candidates should have strong experience in TypeScript, an understa ...

Product Security Engineer Software Security Enablement

Our Team the company is building the world’s most trusted information network for financial professionals. We protect the company. We partner with internal departments to ensure the confidentiality, integrity, and availability of the company systems and the data we process. We aim to ensure that ...

Lead Software Engineer FIXED INCOME UK

Job Description We have an opportunity to impact your career and provide an adventure where you can push the limits of what's possible. As a Lead Software Engineer at JPMorganChase within the Commercial and Investment Bank - Post Trade Technology Group, you are an integral part of an agil ...

AIML Software Engineer, AI for Science

At GSK, we are actively working on building a future in which state-of-the-art software, Artificial Intelligence (AI) and Machine Learning (ML) enable us to develop new therapies and personalized medicines that drive better outcomes for patients at reduced cost with fewer side effects. This ambitious mission req ...

Senior Software Engineer — Session & Auth Infrastructure

United States Digital Space LLC is looking for a Senior Software Engineer to join their team in London, responsible for shaping and scaling session infrastructure. The ideal candidate will have strong experience in C++, designing backend systems. The role involves collaboration across teams and contrib ...

Software Engineer, Mid/Senior (m/f/*)

Who we are We are a London tech startup on the lookout for bright, motivated and self-driven individuals to join the team. Who you are You are a software developer with a keen interest in generating real-world impact with industrial applications. Evidence of self-m ...

Senior Software Engineer: Cloud Platform & Microservices

Dormont Manufacturing Co is looking for a Senior Software Engineer to design, develop, and maintain microservices and core infrastructure. This role requires hands-on experience with Java, JavaScript/TypeScript, Terraform, and Kubernetes. The ideal candidate will contribute to system architecture while ...

Senior Software Engineer ML & Verification Platform

United States Digital Space LLC is seeking a Software Engineer to develop next-generation technologies that revolutionize user interactions. This position requires expertise in software development across various languages, particularly in full-stack environments. You will collaborate with teams to enhance ve ...

Senior Software Engineer Index Data EU

We power some of the most widely recognized indices in the world – billions of dollars are benchmarked against what we build. We're now expanding into the Equity Index market, and the Index Data team is at the centre of that growth. Come and help us build it. Our the company Index Data team owns it ...

Senior Software Engineer, Trading Platform GUI

DRW is a diversified trading firm with over 3 decades of experience bringing sophisticated technology and exceptional people together to operate in markets around the world. We value autonomy and the ability to quickly pivot to capture opportunities, so we operate using our own capital and trading ...

Senior Software Engineer & AI Platform Architect

United States Digital Space LLC is expanding its engineering teams in London and is seeking experienced Tech Leads. This individual contributor role focuses on development and technical leadership in shaping product architecture, utilizing cutting-edge technologies. With a hybrid work model, the role o ...

Senior Software Engineer, Labs — Security Telemetry

SwiftCruit is on the lookout for a Senior Software Engineer to be part of the Labs team within the Security Sciences practice. This role focuses on building and sustaining vital research capabilities for our innovative security data platforms. You will collaborate with engineers to enhance projects lik ...

Senior Software Engineer Fraud Prevention (Hybrid)

United States Digital Space LLC is seeking a Senior Software Engineer to join their Account Integrity team in Greater London. In this high-impact role, you'll enhance financial crime prevention systems, working predominantly on backend tasks and leveraging advanced technologies. You'll be responsible f ...

Lead Software Engineer AI Powered FinTech

United States Digital Space LLC is seeking a Lead Software Engineer in Greater London. In this role, you will impact technology products within the Commercial & Investment Banking sphere, focusing on innovative software solutions and operational excellence. The ideal candidate will have extensive exper ...

Platform Software Engineer: AI & Symbolic Reasoning

SwiftCruit is looking for a motivated software engineer to join their team in Greater London. This role involves developing core capabilities in symbolic reasoning, document ingestion pipelines, and APIs. You will collaborate in a hybrid setting, enhancing systems and contributing to novel solutions at the in ...

Lead Software Engineer Gov Cloud / AI

We are seeking a Lead Software Engineer - Cloud Operations to support and scale its U.S. Government Cloud Operations (USGov CloudOps) platform within Microsoft Azure Government. This role is critical to ensuring the availability, security, resiliency, and compliance of mission critical SaaS services suppor ...

Senior Full Stack Software Engineer (eDV)

Locations: Gloucester, London or Manchester We're supporting a leading defence organisation delivering advanced technology solutions into the UK's defence and national security sector. Due to continued growth, they are looking for eDV (Enhanced DV) Cleared Full Stack D ...

Senior C++ Software Engineer Cyber Security

Senior C++ Software Engineer / Developer Cambridge / WFH to £80k Do you have strong backend C++ software development experience? You could be progressing your career at the world's most advanced cybersecurity technology business that uses AI technology to protect clients acros ...

Software and Systems Defect Coordination Engineer

Our OEM Client based in Gaydon, is searching for Software and Systems Defect Coordination Engineer to join their team, Inside IR35. This is a contract position with a proposed end date of 31st March 2027. Umbrella Pay Rate: £33.64 per hour. Duties: This role (Softw ...

Software Engineer Degree Apprenticeship: Cloud & AI

Reply is offering a Degree Apprenticeship in Software Engineering, focusing on digital technology solutions in the defense sector. The role, based in Bristol, combines software engineering skills with cloud innovation and AI, encompassing full technology stack development. Candidates should have or expect a m ...

Site Reliability / Software Engineer (SC Cleared)

Site Reliability / Software Engineer (SC Cleared) Location: Gloucestershire SC Clearance required to start with the opportunity to be sponsored through DV Clearance after joining Salary: Up to £60,000 + Clearance Bonus To appy, email: Overvie ...

Senior Software Engineer Hybrid Milton Keynes

Experis UK is looking for a Senior Software Engineer to join an experienced team responsible for the development of significant public sector IT solutions. The role involves designing front-end features, creating APIs, and maintaining databases while working on-site in Milton Keynes 2-3 days a week. Ca ...

Senior Software Engineer – Customer Platform Engineering

Obsidian Security is a leading SaaS security platform that protects 200+ organizations across North America, Europe, the Middle East, Southeast Asia, Australia, and New Zealand. We offer a complete SaaS security platform to reduce risk, detect and respond to threats, and prevent breaches at the source. </p ...

Senior Software Engineer, Margin Tech AVP

Citi is seeking a software engineer to join their global technology team in London. This role involves solving engineering challenges and building robust, high-quality solutions while working closely with product teams. The ideal candidate will have a Bachelor's degree in computer science or engineerin ...

Senior Software Engineer Secure Cloud (Hybrid)

Addition is seeking software engineers in Farnborough to build secure, innovative software solutions for Defence and National Security. You will engage in designing, developing, and maintaining software while collaborating with diverse teams. Ideal candidates have expertise in modern backend technologies and ...

Senior Software Engineer – Defence Systems Lead

Cicor Group is seeking a talented Senior Software Engineer to join our dynamic Programmes Division in Gosport. In this crucial role, you will lead software development efforts, ensuring high-quality solutions for our defence programmes. The ideal candidate will have a degree in Software Engineering or ...

Senior Software Engineer, Semantics & Data Platform

IMU Biosciences in Greater London is seeking a Senior Software Engineer to enhance the data platform capabilities. You will work with the Computational Immunology team to build reliable systems for structured scientific data. This hybrid role involves hands-on engineering and collaboration to ensure sc ...

Lead Software Engineer – Engineering Analysis & AI

Rolls-Royce SMR Limited is seeking a Lead Specialist in Software Development for Engineering Analysis, located in the East Midlands. This role involves providing technical leadership and mentoring a team of engineers while advancing software solutions for analysis workflows. Key responsibilities includ ...

Senior Software Engineer (Ads Auction Platform)

Requirements Experience building distributed backend services at scale Strong coding skills in Java and familiarity with service-oriented architectures Experience with low-latency systems and real-time decisioning workflows Familiarity with cloud platforms and ...

Senior Software Engineer – Customer Platform Engineering

Manchester, United Kingdom About the Role We are building a new engineering team focused on handling high-priority customer needs and operational escalations while protecting the broader engineering organization from disruption. The Customer Platform Engineering (CPE) team addresses urgen ...

Senior Software Engineer, Ads Auction Platform

Teamwork makes the stream work. Roku is changing how the world watches TV About the Team The Advertising Performance group focuses on performance for all participants in the Advertising ecosystem - Advertisers, Publishers and Roku. The systems and solutions span across ...

Senior Software Engineer — OMS Resilience & Testability

Core-Asset Consulting Ltd is seeking a Senior Software Engineer in Newcastle upon Tyne to enhance their Order Management and Execution System. The role involves improving code testability and structure while working closely with senior engineers. Applicants should have strong software engineering skill ...

Senior Software Engineer Distributed Risk Engine

Citigroup Inc. is looking for a Senior Engineer to take on the role of Applications Development Technology Lead Analyst for the XiP calculation platform. The position requires extensive knowledge of Java and experience in building and maintaining distributed systems. The successful candidate will desig ...

Senior Software Engineer – Risk Platform (Python)

Energy Jobline ZR is seeking a Senior Software Engineer (Risk) for an Elite Investment Firm in London. This hybrid role requires 7+ years in Software Engineering with a focus on Risk Platforms and experience in modern Python. You will be part of a team responsible for developing a performant Risk platform, in ...

Forward Deployed Software Engineer (UK Defence)

About Northslope The generational companies of the next century will run on mission‑specific AI software that compounds their competitive advantage, not commoditized SaaS. We purpose‑build production AI applications that enable our customers to operate at the speed, scale, and margins of an enterp ...

Frontline Forward Deployed Software Engineer (UK)

Northslope in Greater London is seeking a Forward Deployed Software Engineer to help clients solve critical problems through custom-built solutions. You will work closely with stakeholders to create operational workflows that bring real value to businesses. This role requires proficiency in Python or T ...

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    Software Engineer Pythonjava Jobs in United Kingdom Job Search Guide, Trends and Insights